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Temporally resolved impedance measurement of differential, RF-powered devices using the example of a microwave rfid front-end

机译:以微波RFID前端为例,临时解析差分射频供电设备的阻抗测量

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This work was motivated by the idea to monitor the input impedance of differential front-ends of passive RFID-transponders depending on their power-consumption. Different methods readily available in state-of-the-art network analyzers are compared with regard to the special demands imposed by passive RFID front-ends. At this the correct stimulation of the DUT appears to be the major issue of conventional methods. Hereupon a new approach is proposed which for the first time combines the proper stimulation of differential, RF-powered devices with the data aquisition of differential mixed-mode S-parameters in temporal resolution. The new measurement method is applied to a 2.45GHz RFID transponder showing detailed mixed-mode results of its power-up behavior.
机译:这项工作的灵感来自于根据无源RFID应答器的功耗来监视它们的差分前端的输入阻抗的想法。针对无源RFID前端提出的特殊要求,对最新网络分析仪中易于使用的不同方法进行了比较。因此,正确激励DUT似乎是常规方法的主要问题。因此,提出了一种新方法,该方法首次将对差分,RF供电设备的适当刺激与在时间分辨率上的差分混合模式S参数的数据采集相结合。新的测量方法被应用于2.45GHz RFID应答器,该应答器显示了其上电行为的详细混合模式结果。

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